Endoscopic submucosal dissection with SB Knife® for treatment of a subcardial gastric leiomyoma.

Surgery has been considered the main treatment for submucosal tumors (SMTs); however, endoscopic resection is currently accepted for gastric SMTs smaller than 3cm. Endoscopic submucosal dissection (ESD) is considered the technique of choice and submucosal tunneling endoscopic resection shows successful results with low complication rate in the recent meta-analysis by Cao et al. The major limitation of these methods is the technical difficulty to be applied in certain anatomic locations.